19896506552 has 120 divisors (see below), whose sum is σ = 42520359840. Its totient is φ = 8719102080.

The previous prime is 19896506551. The next prime is 19896506561. The reversal of 19896506552 is 25560569891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19896506551) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 375405758 + ... + 375405810.

It is an arithmetic number, because the mean of its divisors is an integer number (354336332).

Almost surely, 2^19896506552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19896506552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21260179920).

19896506552 is an abundant number, since it is smaller than the sum of its proper divisors (22623853288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19896506552 is an frugal number, since it uses more digits than its factorization.

19896506552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 56.

The spelling of 19896506552 in words is "nineteen billion, eight hundred ninety-six million, five hundred six thousand, five hundred fifty-two".